Applications:


Features:


DescriptionThe PRL429LP is a 2channel NCML to differential LVPECL Logic Level Translator module. Each channel has a differential NCML input and a differential LVPECL output. The LVPECL DC output logic Hi/Lo levels are 2.20 V and 1.75 V, respectively, when terminated to 50 Ω/+1.3 V loads. The PRL429LP complementary outputs must be used together for driving differential LVPECL inputs only, because the reduced output logic swing of 400 mV_{PP} (for short circuit protection reasons) is not logic level compatible with some singleended LVPECL inputs. These Logic Level Translators are designed specifically for use in testing and interfacing of high speed digital communications circuits, where conversion between NCML and LVPECL logic signals is often required. The PRL429LP is part of the Mini Modular Instrument™ (MMI) family that find increasing applications in high speed digital data recording instruments, transient recording instruments and other high speed measurement equipment where NCML and LVPECL signals are often specified. 
(0° C ≤ T_{A} ≤ 35° C)*
Unless otherwise specified, all logic level and dynamic measurements are made with all outputs terminated into 50 Ω/V_{TT}, where V_{TT} = 0 V for LVPECL outputs.
SYMBOL  PARAMETER  PRL429LP  UNIT  

Min  Typ  Max  
R_{IN}  Input Resistance  49.5  50.0  50.5  Ω 
R_{OUT}  Output Resistance  49.5  50.5  50.5  Ω 
V_{IL}  Input Lo Voltage  V  
V_{IH}  Input Hi Voltage  V  
V_{OL}  DC Output Low Level, into 50 Ω/+1.3 V  1.75  V  
V_{OH}  DC Output High Level, into 50 Ω/+1.3 V  2.20  V  
V_{OPP1}  Output Logic Swing from DC500MHz  mV  
V_{OPP2}  Output Logic Swing from 500MHz1GHz  mV  
V_{OPP3}  Output Logic Swing from 1GHz 1.5GHz  mV  
I_{DC1}  DC Input Current, +8.5 V  160  mA  
I_{DC2}  DC Input Current, 8.5 V  315  mA  
V_{DC}  DC Input Voltage  ±7.5  ±8.5  ±12.0  V 
V_{AC}  AC/DC Adapter Input Voltage  108  120  132  V 
t_{PLH}  Propagation Delay to output ↑  1.5  ns  
t_{PHL}  Propagation Delay to output ↓  1.5  ns  
t_{R}/t_{F}  Rise/Fall Times (1090%)  650  750  ps  
T_{SKEW}  Skew between any 2 outputs  40  75  ps  
V_{IN}I  Minimum Input Voltage @ 150 MHz  20  10  mV_{pp}  
V_{IN}II  Minimum Input Voltage @ 250 MHz  20  10  mV_{pp}  
f_{MAX}  Max Clock Frequency  1250  1500  MHz  
Size  1.3H x 2.9W x 3.9D  in.  
Weight, excluding AC adapter  7  Oz  
Shipping weight, including AC adapter  4  lb. 